Measured Mains Voltage does not match the Mains Voltage readings according to the HMI on ATV61 or ATV71?
Altivar ATV61 and ATV71
All models, all serial numbers
Flat topping on the input AC waveform.
The HMI's Mains Voltage reading is a calculation of the Mains Voltage, by reading the DC bus. It is calculated by taking the DC bus value and dividing it by the square root of 2.